Home / 6,439.90-8,887.61-3,607.22

Finding the Fourth Proportional to 6,439.90, 8,887.61 and 3,607.22

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Solution

The fourth proportional to 6,439.90, 8,887.61 and 3,607.22 is: 4,978.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,439.90 : 8,887.61 = 3,607.22 : x
  2. Step 2: Convert to fraction form
    6,439.90/8,887.61 = 3,607.22/x
  3. Step 3: Cross multiply
    6,439.90x = 8,887.61 × 3,607.22
  4. Step 4: Simplify right side
    6,439.90x = 32,059,546.51
  5. Step 5: Solve for x
    x = 32,059,546.51/6,439.90
  6. Step 6: Final answer
    x = 4,978.27

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.